CN111505981B - UHF-based intelligent information acquisition system and method - Google Patents
UHF-based intelligent information acquisition system and method Download PDFInfo
- Publication number
- CN111505981B CN111505981B CN202010272239.XA CN202010272239A CN111505981B CN 111505981 B CN111505981 B CN 111505981B CN 202010272239 A CN202010272239 A CN 202010272239A CN 111505981 B CN111505981 B CN 111505981B
- Authority
- CN
- China
- Prior art keywords
- wireless
- capacitor
- controller
- circuit
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Automation & Control Theory (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses an intelligent information acquisition system and method based on UHF (ultra high frequency), which comprises a server, a wireless concentrator and wireless collectors, wherein one wireless concentrator is wirelessly connected with a plurality of wireless collectors, the wireless concentrator is wirelessly connected with the server, the wireless concentrator comprises a controller, a GPRS (general packet radio service) communication circuit and a concentrated LORA (radio over head) communication circuit for communicating with the wireless collectors, a controller information reporting control end is connected with a GPRS communication circuit control end, a controller information receiving and transmitting end is connected with a concentrated LORA communication circuit information uploading end, each wireless collector comprises an MCU (microprogrammed control unit) control circuit, an information acquisition device for acquiring information and an acquisition LORA communication circuit for communicating with the wireless concentrator, the MCU control circuit information acquisition end is connected with an information acquisition device signal output end, and the MCU control circuit information uploading control end is connected with an information transmission control end of the acquisition LORA communication circuit. The invention provides an intelligent information acquisition system and method based on UHF, which can reduce communication cost by remote monitoring technology.
Description
Technical Field
The invention relates to the technical field of electric power information acquisition, in particular to an intelligent information acquisition system and method based on UHF.
Background
At present, the remote monitoring technology of power supply enterprises adopts a GPRS wireless network for data acquisition, but monthly SIM flow monthly fee already brings little economic burden to the enterprises, and the implementation of the power distribution network remote monitoring technology which is just started is also restricted. How to expand the technical variety of the wireless network and adopt the most economical, most practical and most stable technology to establish the remote monitoring network of the power distribution network is necessary to carry out deep research. The problem is mainly solved by aiming at the problems that the data acquisition instability of power carrier waves and the high monthly payment of an SIM card of a GPRS wireless acquisition device which are commonly adopted by power supply enterprises at present are caused, the construction of expanding the application of wireless network technology types and constructing a power distribution network remote monitoring technology which is widely distributed and has a complex regional environment is implemented, and the aims of reducing the use of the GPRS wireless acquisition device and reducing the monthly payment of the SIM card of the power supply enterprises are expected to be achieved through research.
Chinese patent publication No. CN110224491A, published 2019, 09 month and 10 days, entitled monitoring device, monitoring method and monitoring system for automatic switch of distributed power distribution network, the application includes a monitoring device for automatic switch of distributed power distribution network, which includes a power direction element and a first display device, in addition to a circuit parameter acquisition circuit, a switching value input circuit, a communication interface, a control loop, a relay output circuit, a signal acquisition circuit connected to the circuit parameter acquisition circuit, a device power supply, and a controller respectively connected to the circuit parameter acquisition circuit, the switching value input circuit, the communication interface, the control loop, the relay output loop, the signal acquisition circuit and the device power supply, wherein the power direction element is disposed between the circuit parameter acquisition circuit and the controller, and can transmit the current direction information flowing through the local monitoring device to the controller, the controller displays the current direction on the first display device, and operation and maintenance personnel are facilitated to locate fault points in the distributed power distribution network. The communication of this application can not accomplish the effect of saving the communication expense, also can not use mobile terminal to set up and read data some devices when breaking down and installing for the first time.
Disclosure of Invention
The invention provides an intelligent information acquisition system and method based on UHF (ultra high frequency) for reducing communication cost of a remote monitoring technical means, aiming at overcoming the problem of high communication cost caused by the use of the remote monitoring technical means in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the technical scheme adopted by the invention for solving the technical problems is as follows: an intelligent information acquisition system based on UHF comprises a server, a plurality of wireless concentrators, a plurality of wireless collectors for acquiring information and a mobile terminal, wherein one wireless concentrator is wirelessly connected with the plurality of wireless collectors, the wireless concentrators are wirelessly connected with the server, each wireless concentrator comprises a controller, a GPRS (general packet radio service) communication circuit for wirelessly communicating with the server, a concentrated LORA communication circuit for communicating with the wireless collectors and a temperature and humidity sensor, an information reporting control end of the controller is connected with a control end of the GPRS communication circuit, an information uploading end of the concentrated LORA communication circuit is connected with an information reporting end of the controller, the temperature and humidity sensor is arranged in the wireless collectors, a temperature and humidity data output end of the temperature and humidity sensor is connected with a temperature and humidity data receiving end of the controller, each wireless collector comprises an MCU control circuit, an information acquisition collector for acquiring information, an acquisition LORA communication circuit for communicating with the wireless concentrators and a Bluetooth communication circuit wirelessly connected with the mobile terminal, MCU control circuit information acquisition end connection information collector signal output end, MCU control circuit information upload control end connection collection LORA communication circuit information transmission control end, bluetooth communication circuit information transceiver end connection MCU control circuit bluetooth information transceiver end. In order to reduce the overall cost of the traditional wireless power data acquisition system, each wireless acquisition device does not adopt a GPRS communication mode, but adopts a mode of combining a remote Internet of things wireless communication technology and a GPRS technology to construct a wireless power data acquisition network. The wireless collector adopts a long-distance Internet of things wireless communication technology LORA, and the point-to-point communication distance can reach more than one kilometer; the collected data are collected into a wireless concentrator, and the concentrator sends the collected terminal data to a server in a GPRS communication mode. The system is a typical star network, the network center is a UHF/GPRS gateway or a concentrator, and the UHF communication frequency band is set in a free frequency band of 470 MHz-510 MHz, so that the purpose of reducing the use cost of the system is achieved.
Preferably, the wireless concentrator further comprises a bluetooth concentrated communication circuit for wirelessly connecting with the mobile terminal, the bluetooth communication circuit information transceiving end is connected with the controller bluetooth information transceiving end, and the mobile terminal is wirelessly connected with the server. The Bluetooth communication circuit provides a choice for communication with the mobile terminal APP in the future, and UHF equipment communication parameters and system parameters can be set through the mobile terminal APP in the future, and UHF equipment communication data and system parameters can be read by directly using the mobile terminal when a fault occurs.
Preferably, the wireless concentrator further comprises a GPS module circuit for positioning, and a GPS module circuit position signal output end is connected to the controller position signal receiving end. The GPS module circuit can provide position information for the wireless concentrator, so that the server can conveniently read the position of the wireless concentrator, and the position information is provided for repairing faults and changing installation places.
Preferably, the information collector comprises a temperature and humidity sensor for collecting the temperature and humidity of the wireless collector and a 485 communication circuit for collecting the working parameters of the residual current operated circuit breaker, the information output end of the temperature and humidity sensor is connected with the temperature and humidity signal collecting end of the MCU control circuit, and the signal output end of the 485 communication circuit is connected with the working parameter signal collecting end of the MCU control circuit breaker. The temperature and humidity information is collected, the temperature and humidity condition of the circuit can be monitored, the temperature and humidity condition can be timely mastered when abnormity occurs, loss is avoided, the working parameters of the residual current operated circuit breaker are collected through the 485 communication circuit, the current, the voltage and the residual current data of the circuit can be known, and data support is provided for fault finding and analysis.
Preferably, the concentrated LORA communication circuit and the collected LORA communication circuit both include LORA controllers, receiving channel circuits, transmitting channel circuits, radio frequency switch control circuits and antennas, a wireless signal transmitting end of the LORA controllers is connected with a signal input end of the transmitting channel circuits, a signal output end of the transmitting channel circuits is connected with a signal receiving end of the radio frequency switch control circuits, a signal external transmitting and receiving end of the radio frequency switch control circuits is connected with a signal transmitting and receiving end of the antennas, a signal receiving output end of the radio frequency switch control circuits is connected with an input end of the receiving channel circuits, and a signal output end of the receiving channel circuits is connected with a wireless signal receiving end of the LORA controllers. The LORA wireless communication technology is suitable for medium and long distance wireless communication networks, the communication distance is as long as several kilometers, the anti-jamming capability is strong, the wireless communication technology has more advantages compared with the existing other Internet of things wireless communication modes, the working frequency band can be set, and free UHF frequency bands which can be used in China are 430M-440 MHz and 470M-510 MHz, so the advantages of the LORA technology are very obvious.
Preferably, the receiving channel circuit comprises a capacitor C20, a capacitor C1, a capacitor C21, a capacitor C26, an inductor L4, an inductor L8, and an inductor L1, wherein a first end of the capacitor C20 serves as a signal output end of the receiving channel circuit, a second end of the capacitor C20 is grounded, one end of the inductor L4 is connected with a first end of the capacitor C20, the other end of the inductor L4 is grounded, one end of the capacitor C1 is connected with a first end of the capacitor C20, the other end of the capacitor C1 is connected with a first end of the capacitor C21, the inductor L8 is connected in parallel with the capacitor C1, a second end of the capacitor C21 is connected with one end of the capacitor C26, the other end of the capacitor C26 is grounded, the inductor L1 is connected in parallel with the capacitor C26, and a second end of the capacitor C21 serves as an input end of the receiving channel circuit.
Preferably, the transmit channel circuit includes a resistor R20, a capacitor C20, an inductor L20, a first radio signal transmitter RFO-LF of the LORA controller is connected to one end of the resistor R20, the other end of the resistor R20 is connected to a first end of the inductor L20, a second radio signal transmitter PA-BOOST of the LORA controller is connected to one end of the resistor R20, the other end of the resistor R20 is connected to a first end of the inductor L20, a second end of the inductor L20 is connected to a second end of the LORA controller VR-PA, the second end of the inductor L20 is connected to one end of the capacitor C20, the other end of the capacitor C20 is connected to ground, the first end of the inductor L20 is connected to one end of the capacitor C20, the other end of the capacitor C20 is connected to the capacitor C20, the other end of the inductor L20 is connected to ground, the inductor L9 is connected in parallel with the capacitor C24, the second end of the capacitor C24 is connected with the first end of the capacitor C29, the second end of the capacitor C29 is grounded, and the first end of the capacitor C29 serves as a signal output end of the sending channel circuit.
Preferably, the radio frequency switch control circuit includes a radio frequency switch controller, a resistor R14, a resistor R1, a capacitor C30 and a capacitor C32, the radio frequency switch controller RF1 serves as a radio frequency switch control circuit receiving signal output terminal, the radio frequency switch controller RF2 serves as a radio frequency switch control circuit sending signal receiving terminal, the radio frequency switch controller RFC serves as a first terminal of the capacitor C32, the capacitor C32 serves as a radio frequency switch control circuit signal external transceiving terminal, the radio frequency switch controller CTRL serves as a first terminal of the resistor R14, and the resistor R14 serves as a second terminal of the resistor R14 and is connected to an MCU control circuit switching channel signal terminal or a controller switching channel signal terminal.
The invention also comprises an intelligent information acquisition method based on UHF, and the adoption of the above intelligent information acquisition system based on UHF comprises the following steps:
s1: the server numbers all the wireless concentrators, the wireless collectors and the mobile terminals;
s2; the controller sets a basic time threshold, a floating time threshold and a polling time threshold, wherein the polling time threshold is equal to the sum of the basic time threshold and the floating time threshold, and the floating time threshold is in negative correlation with the power utilization load of the power grid where the wireless concentrator is located;
s3; the time when the wireless concentrator polls the same wireless collector is a polling time threshold value, and the controller packs and sends data received by polling in a round to the server.
Preferably, the polling procedure in step S3 is: the controller sets an overtime time threshold, the wireless concentrator sends a data acquisition instruction to the wireless collector, the controller starts timing, the wireless collector packs and sends data required to be sent in the acquisition instruction to the wireless concentrator, when the controller times the overtime time threshold, the controller judges whether the data from the wireless collector is received, if the data is received, polling is continuously carried out, otherwise, the controller defines the wireless collector as a fault wireless collector, writes the serial number data of the fault wireless collector into the overtime instruction and sends the serial number data to the server, the server distributes a specified mobile terminal to the fault wireless collector, the specified mobile terminal is connected with the fault wireless collector through Bluetooth communication, the specified mobile terminal sends a connection success signal to the server, the server sends the communication address of the specified mobile terminal to the wireless concentrator, and the wireless concentrator establishes connection with the specified mobile terminal, when the wireless concentrator polls a wireless collector with a fault, the wireless collector sends a polling instruction to a specified mobile terminal, the specified mobile terminal analyzes the polling instruction and obtains data required to be collected by the polling instruction, the specified mobile terminal obtains the data required to be collected by the polling instruction from a wireless collector with the fault through Bluetooth communication connection, and the mobile terminal packs and sends the data to the wireless concentrator after obtaining the data to complete the polling of the wireless collector with the fault.
Therefore, the invention has the following beneficial effects: (1) the wireless power data acquisition network is constructed by combining the remote Internet of things wireless communication technology and the GPRS technology, so that the total cost of the traditional wireless power data acquisition system can be reduced. The wireless collector adopts a long-distance Internet of things wireless communication technology LORA, and the point-to-point communication distance can reach more than one kilometer; the collected data are collected into a wireless concentrator, and the concentrator sends the collected terminal data to a server in a GPRS communication mode. The system is a typical star network, the network center is a UHF/GPRS gateway or a concentrator, and the UHF communication frequency band is set at a free frequency band of 470 MHz-510 MHz, so that the purpose of reducing the use cost of the system is achieved;
(2) the Bluetooth communication circuit provides a choice for future communication with the mobile terminal APP, UHF equipment communication parameters and system parameters can be set through the mobile terminal APP in the future, and UHF equipment communication data and system parameters can be directly read by using the mobile terminal when a fault occurs;
(3) the GPS module circuit can provide position information for the wireless concentrator, so that the server can conveniently read the position of the wireless concentrator, and position information is provided for repairing faults and changing installation places;
(4) the temperature and humidity information is collected, the temperature and humidity conditions of the circuit can be monitored, the temperature and humidity conditions can be mastered in time when abnormality occurs, loss is avoided, the working parameters of the residual current operated circuit breaker are collected through the 485 communication circuit, the current, voltage and residual current data of the circuit can be obtained, and data support is provided for fault discovery and analysis;
(5) the LORA wireless communication technology is suitable for medium and long distance wireless communication networks, the communication distance is as long as several kilometers, the anti-jamming capability is strong, the wireless communication technology has more advantages compared with the existing other Internet of things wireless communication modes, the working frequency band can be set, and free UHF frequency bands which can be used in China are 430M-440 MHz and 470M-510 MHz, so the advantages of the LORA technology are very obvious.
Drawings
FIG. 1 is a block diagram of an architecture of the present invention
FIG. 2 is a block diagram of a wireless concentrator configuration of the present invention
FIG. 3 is a block diagram of a wireless collector according to the present invention
FIG. 4 is a circuit diagram of a centralized LORA communication circuit and a collection LORA communication circuit of the present invention
FIG. 5 is a structural topology of the present invention
In the figure: 1. the system comprises a server, 2, a wireless concentrator, 21, a GPRS communication circuit, 22, a concentrated LORA communication circuit, 221, an LORA controller, 222, a receiving channel circuit, 223, a sending channel circuit, 224, a radio frequency switch control circuit, 2241, a radio frequency switch controller, 225, an antenna, 23, a controller, 24, a Bluetooth concentrated communication circuit, 25, a GPS module circuit, 26, a concentrator temperature and humidity sensor, 3, a wireless collector, 31, an MCU control circuit, 32, an information collector, 321, a temperature and humidity sensor, 322.485 communication circuit, 33, a collected LORA communication circuit, 34, a Bluetooth communication circuit and 4, a mobile terminal.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example (b): an intelligent information acquisition system based on UHF is disclosed, as shown in figure 1 and figure 5, the system comprises a server 1, a plurality of wireless concentrators 2, a plurality of wireless collectors 3 for collecting information and a mobile terminal 4, the mobile terminal can be a mobile phone, a computer and a tablet personal computer, in the embodiment, three wireless concentrators are taken as an example, one wireless concentrator is wirelessly connected with 10 wireless collectors, the wireless concentrators are connected with the server through a GPRS communication mode, as shown in figure 2, the wireless concentrators comprise a controller 23, a GPRS communication circuit 21 for wirelessly communicating with the server, a centralized LORA communication circuit 22 for communicating with the wireless collectors, a Bluetooth centralized communication circuit 24 for wirelessly connecting with the mobile terminal, a GPS module circuit 25 for positioning and a concentrator temperature and humidity sensor 26, the controller adopts STM32F103 series chips, an STM32F103 information reporting control end of the wireless concentrator is connected with a GPRS communication circuit control end, wireless concentrator STM32F103 information transceiver end connects concentrated LORA communication circuit information and uploads the end, concentrator temperature and humidity sensor sets up in wireless collector, concentrator temperature and humidity sensor temperature and humidity data output end connects wireless concentrator STM32F103 temperature and humidity data receiving terminal, as shown in FIG. 3, wireless collector includes MCU control circuit 31, information collection unit 32 of collection information, be used for with wireless concentrator communication's collection LORA communication circuit 33 and with mobile terminal wireless connection's bluetooth communication circuit 34, MCU control circuit also is STM32F103 series chip, wireless collector STM32F103 information acquisition end connects information collection unit signal output part, wireless collector STM32F103 bluetooth information transceiver end is connected to bluetooth communication circuit information transceiver end, wireless collector STM32F103 information uploads the control end and connects collection LORA communication circuit information transmission control end. The Bluetooth centralized communication circuit information transceiving end is connected with the wireless concentrator STM32F103 Bluetooth information transceiving end. And a circuit position signal output end of the GPS module is connected with a position signal receiving end of the wireless concentrator STM32F 103. The wireless concentrator is internally provided with a high-capacity lithium battery and a charging circuit, and the high-capacity lithium battery and the charging circuit can be directly powered by the battery.
The information collector comprises a temperature and humidity sensor 322 for collecting the temperature and the humidity of the wireless collector and a 485 communication circuit 321 for collecting the working parameters of the residual current operated circuit breaker, the information output end of the temperature and humidity sensor is connected with a temperature and humidity signal collecting end of an MCU control circuit, the setting position of the temperature and humidity sensor can be installed by a person skilled in the art according to the technical knowledge in the field, the signal output end of the 485 communication circuit is connected with a working parameter signal collecting end of a wireless collector STM32F103 circuit breaker, and the 485 communication circuit can be connected with the circuit breaker by the person skilled in the art according to the technical knowledge in the field.
Concentrated LORA communication circuit and gather LORA communication circuit and all include LORA controller 221, receive channel circuit 222, send channel circuit 223, radio frequency switch control circuit 224 and antenna 225, SX1278 adopts SX1278, the wireless signal transmitting terminal of SX1278 connects send channel circuit signal input part, send channel circuit signal output part connects radio frequency switch control circuit send signal receiving terminal, radio frequency switch control circuit signal external receiving terminal connects antenna signal receiving terminal, radio frequency switch control circuit received signal output part connects receive channel circuit input part, receive channel circuit signal output part connects SX1278 wireless signal receiving terminal. The LORA wireless communication technology is suitable for medium and long distance wireless communication networks, the communication distance is as long as several kilometers, the anti-jamming capability is strong, the wireless communication technology has more advantages compared with the existing other Internet of things wireless communication modes, the working frequency band can be set, and free UHF frequency bands which can be used in China are 430M-440 MHz and 470M-510 MHz, so the advantages of the LORA technology are very obvious.
The receiving channel circuit comprises a capacitor C20, a capacitor C1, a capacitor C21, a capacitor C26, an inductor L4, an inductor L8 and an inductor L1, wherein a first end of the capacitor C20 is used as a signal output end of the receiving channel circuit, a second end of the capacitor C20 is grounded, one end of an inductor L4 is connected with a first end of the capacitor C20, the other end of the inductor L4 is grounded, one end of the capacitor C1 is connected with a first end of a capacitor C20, the other end of the capacitor C1 is connected with a first end of a capacitor C21, the inductor L8 is connected with the capacitor C1 in parallel, a second end of the capacitor C21 is connected with one end of a capacitor C26, the other end of a capacitor C26 is grounded, the inductor L1 is connected with the capacitor C26 in parallel, and a second end of the capacitor C21 is used as an input end of the receiving channel circuit.
The transmitting channel circuit comprises a resistor R, a capacitor C, an inductor L, an SX1278 first wireless signal transmitting terminal RFO-LF connected with one end of the resistor R, the other end of the resistor R connected with a first end of the inductor L, an SX1278 second wireless signal transmitting terminal PA-BOOST connected with one end of the resistor R, the other end of the resistor R connected with a first end of the inductor L, a second end of the inductor L connected with a VR-PA end of the SX1278, the second end of the inductor L connected with one end of the capacitor C, the other end of the capacitor C grounded, the capacitor C connected with one end of the capacitor C in parallel, the first end of the inductor L connected with one end of the capacitor C, the other end of the capacitor C connected with a first end of the capacitor C, the second end of the capacitor C connected with one end of the inductor L, the other end of the inductor L grounded, the inductor L connected with the capacitor C in parallel, the second end of the capacitor C24 is connected to the first end of the capacitor C29, the second end of the capacitor C29 is grounded, and the first end of the capacitor C29 is used as the signal output end of the transmitting channel circuit.
The radio frequency switch control circuit comprises a radio frequency switch controller 2241, a resistor R14, a resistor R1, a capacitor C30 and a capacitor C32, the radio frequency switch controller adopts PE4259, an RF1 end of the PE4259 is used as a receiving signal output end of the radio frequency switch control circuit, an RF2 end of the PE4259 is used as a sending signal receiving end of the radio frequency switch control circuit, an RFC end of the PE4259 is connected with a first end of the capacitor C32, a second end of the capacitor C32 is used as a signal external transceiving end of the radio frequency switch control circuit, a CTRL end of the PE4259 is connected with a first end of the resistor R14, and a second end of the resistor R14 is connected with a switching channel signal end Rx/Tx-Ct of the wireless collector STM32F103 or a switching channel signal end Rx/Tx-Ctrl of the wireless collector STM32F 103.
The invention also comprises an intelligent information acquisition method based on UHF, and the adoption of the above intelligent information acquisition system based on UHF comprises the following steps:
s1: the server numbers all the wireless concentrators, the wireless collectors and the mobile terminals;
s2; the controller sets a basic time threshold, a floating time threshold and a polling time threshold, wherein the basic time threshold can be set to be 5 minutes, the polling time threshold is equal to the basic time threshold and is added with the floating time threshold, and the floating time threshold is in negative correlation with the power utilization load of the power grid where the wireless concentrator is located; the setting of the floating time threshold value can be analyzed through the power utilization load of the power grid where the wireless concentrator is located, after the power utilization load is increased, the floating time threshold value is linearly reduced along with the power utilization load, the floating time threshold value can be a negative value, the time of the highest power utilization load of the power grid where the wireless concentrator is located corresponding to the floating time threshold value in the last whole day is 2 minutes, and the time of the lowest power utilization load of the power grid where the wireless concentrator is located corresponding to the floating time threshold value in the last whole day is 8 minutes. When the electricity utilization load of the power grid where the wireless concentrator is located changes, the linear change of the floating time threshold value is caused.
S3; the time difference of the wireless concentrator polling the same wireless collector is a polling time threshold value, and the controller packs and sends data received by polling in a round to the server. The polling process is as follows: the controller sets an overtime time threshold, the wireless concentrator sends a data acquisition instruction to the wireless collector, the controller starts timing, the wireless collector packs and sends data required to be sent in the acquisition instruction to the wireless concentrator, when the controller times the overtime time threshold, the controller judges whether the data from the wireless collector is received, if the data is received, polling is continuously carried out, otherwise, the controller defines the wireless collector as a fault wireless collector, writes the serial number data of the fault wireless collector into the overtime instruction and sends the serial number data to the server, the server distributes a specified mobile terminal to the fault wireless collector, the specified mobile terminal is connected with the fault wireless collector through Bluetooth communication, the specified mobile terminal sends a connection success signal to the server, the server sends the communication address of the specified mobile terminal to the wireless concentrator, and the wireless concentrator establishes connection with the specified mobile terminal, when the wireless concentrator polls a wireless collector with a fault, the wireless collector sends a polling instruction to a specified mobile terminal, the specified mobile terminal analyzes the polling instruction and obtains data required to be collected by the polling instruction, the specified mobile terminal obtains the data required to be collected by the polling instruction from a wireless collector with the fault through Bluetooth communication connection, and the mobile terminal packs and sends the data to the wireless concentrator after obtaining the data to complete the polling of the wireless collector with the fault.
In order to reduce the overall cost of the traditional wireless power data acquisition system, each wireless acquisition device does not adopt a GPRS communication mode, but adopts a mode of combining a remote Internet of things wireless communication technology and a GPRS technology to construct a wireless power data acquisition network. The wireless collector adopts a long-distance Internet of things wireless communication technology LORA, and the point-to-point communication distance can reach more than one kilometer; the collected data are collected into a wireless concentrator, and the concentrator sends the collected terminal data to a server in a GPRS communication mode. The system is a typical star network, the network center is a UHF/GPRS gateway or a concentrator, and the UHF communication frequency band is set in a free frequency band of 470 MHz-510 MHz, so that the purpose of reducing the use cost of the system is achieved.
The Bluetooth communication circuit provides a choice for communication with the mobile terminal APP in the future, and UHF equipment communication parameters and system parameters can be set through the mobile terminal APP in the future, and UHF equipment communication data and system parameters can be read by directly using the mobile terminal when a fault occurs.
The GPS module circuit can provide position information for the wireless concentrator, so that the server can conveniently read the position of the wireless concentrator, and the position information is provided for repairing faults and changing installation places.
The temperature and humidity information is collected, the temperature and humidity condition of the circuit can be monitored, the temperature and humidity condition can be timely mastered when abnormity occurs, loss is avoided, the working parameters of the residual current operated circuit breaker are collected through the 485 communication circuit, the current, the voltage and the residual current data of the circuit can be known, and data support is provided for fault finding and analysis.
Claims (9)
1. An intelligent information acquisition system based on UHF is characterized in that the system comprises a server, a plurality of wireless concentrators, a plurality of wireless collectors and a mobile terminal, wherein one wireless concentrator is wirelessly connected with the plurality of wireless collectors, the wireless concentrators are wirelessly connected with the server, each wireless concentrator comprises a controller, a GPRS (general packet radio service) communication circuit for wirelessly communicating with the server, a concentrated LORA communication circuit for communicating with the wireless collectors and a concentrator temperature and humidity sensor, a controller information reporting control end is connected with a GPRS communication circuit control end, a controller information receiving and transmitting end is connected with a concentrated LORA communication circuit information uploading end, the concentrator temperature and humidity sensor is arranged in the wireless collectors, a concentrator temperature and humidity sensor temperature and humidity data output end is connected with a controller temperature and humidity data receiving end, each wireless collector comprises an MCU control circuit, an information collector for collecting information, and the mobile terminal, The system comprises a collection LORA communication circuit used for communicating with a wireless concentrator and a Bluetooth communication circuit wirelessly connected with a mobile terminal, wherein an information collection end of an MCU control circuit is connected with a signal output end of an information collector, an information uploading control end of the MCU control circuit is connected with an information transmission control end of the collection LORA communication circuit, and an information receiving and transmitting end of the Bluetooth communication circuit is connected with a Bluetooth information receiving and transmitting end of the MCU control circuit;
the controller sets an overtime time threshold, the wireless concentrator sends a data acquisition instruction to the wireless collector, the controller starts timing, the wireless collector packs and sends data required to be sent in the acquisition instruction to the wireless concentrator, when the controller times the overtime time threshold, the controller judges whether the data from the wireless collector is received, if the data is received, polling is continuously carried out, otherwise, the controller defines the wireless collector as a fault wireless collector, writes the serial number data of the fault wireless collector into the overtime instruction and sends the serial number data to the server, the server distributes a specified mobile terminal to the fault wireless collector, the specified mobile terminal is connected with the fault wireless collector through Bluetooth communication, the specified mobile terminal sends a connection success signal to the server, the server sends the communication address of the specified mobile terminal to the wireless concentrator, and the wireless concentrator establishes connection with the specified mobile terminal, when the wireless concentrator polls a wireless collector with a fault, the wireless collector sends a polling instruction to a specified mobile terminal, the specified mobile terminal analyzes the polling instruction and obtains data required to be collected by the polling instruction, the specified mobile terminal obtains the data required to be collected by the polling instruction from the wireless collector with the fault through Bluetooth communication connection, and the mobile terminal obtains the data and then packages and sends the data to the wireless concentrator to complete the polling of the wireless collector with the fault.
2. The UHF-based intelligent information acquisition system of claim 1, wherein the wireless concentrator further comprises a bluetooth centralized communication circuit for wirelessly connecting with the mobile terminal, the bluetooth communication circuit information transceiver end is connected with the controller bluetooth information transceiver end, and the mobile terminal is wirelessly connected with the server.
3. The UHF-based intelligent information acquisition system of claim 1, wherein the wireless concentrator further comprises a GPS module circuit for positioning, the GPS module circuit position signal output terminal being connected to the controller position signal receiving terminal.
4. The UHF-based intelligent information acquisition system as recited in claim 1, wherein the information collector comprises a temperature and humidity sensor for collecting the temperature and humidity of the wireless collector and a 485 communication circuit for collecting the operating parameters of the residual current operated circuit breaker, the information output end of the temperature and humidity sensor is connected with the temperature and humidity signal acquisition end of the MCU control circuit, and the signal output end of the 485 communication circuit is connected with the operating parameter signal acquisition end of the MCU control circuit breaker.
5. An intelligent UHF-based information collection system according to claim 1, wherein the centralized LORA communication circuit and the collection LORA communication circuit each comprise an LORA controller, a receive channel circuit, a transmit channel circuit, a radio frequency switch control circuit and an antenna, a wireless signal transmitting end of the LORA controller is connected with a signal input end of the transmit channel circuit, a signal output end of the transmit channel circuit is connected with a signal receiving end of the radio frequency switch control circuit, a signal external transmitting and receiving end of the radio frequency switch control circuit is connected with an antenna signal transmitting and receiving end, a signal receiving output end of the radio frequency switch control circuit is connected with an input end of the receive channel circuit, and a signal output end of the receive channel circuit is connected with a wireless signal receiving end of the LORA controller.
6. An intelligent UHF-based information acquisition system as claimed in claim 5, wherein the receiving channel circuit comprises a capacitor C20, a capacitor C1, a capacitor C21, a capacitor C26, an inductor L4, an inductor L8 and an inductor L1, a first end of the capacitor C20 is used as a signal output end of the receiving channel circuit, a second end of the capacitor C20 is grounded, one end of the inductor L4 is connected with a first end of the capacitor C20, the other end of the inductor L4 is grounded, one end of the capacitor C1 is connected with a first end of the capacitor C20, the other end of the capacitor C1 is connected with a first end of the capacitor C21, the inductor L8 is connected with the capacitor C1 in parallel, a second end of the capacitor C21 is connected with one end of a capacitor C26, the other end of the capacitor C26 is grounded, the inductor L1 is connected with the capacitor C26 in parallel, and a second end of the capacitor C21 is used as an input end of the receiving channel circuit.
7. The UHF-based intelligent information acquisition system as claimed in claim 5, wherein the transmission channel circuit comprises a resistor R20, a resistor R30, and a capacitorC39, a capacitor C38, a capacitor C18, a capacitor C19, a capacitor C24, a capacitor C29, an inductor L5, an inductor L9, an inductor L10, and a first wireless signal transmitting terminal RFO of the LORA controller—One end of a resistor R20 is connected in the LF, the other end of the resistor R20 is connected with the first end of an inductor L5, and a second wireless signal sending end PA of the LORA controller—BOOST connects one end of resistance R30, and the first end of inductance L5 is connected to resistance R30 other end, and the LORA controller VR is connected to inductance L5 second end—The PA terminal, inductor L5 second end is connected with electric capacity C39 one end, electric capacity C39 other end ground connection, electric capacity C39 and electric capacity C38 are parallelly connected, electric capacity C18 one end is connected to inductor L5 first end, electric capacity C18 other end ground connection, electric capacity C19 one end is connected to inductor L5 first end, electric capacity C24 first end is connected to the electric capacity C19 other end, electric capacity C24 second end is connected inductance L10 one end, the other end ground connection of inductor L10, inductor L9 and electric capacity C24 are parallelly connected, electric capacity C24 second end is connected with electric capacity C29 first end, electric capacity C29 second end ground connection, electric capacity C29 first end is as sending channel circuit signal output.
8. An intelligent UHF-based information acquisition system as claimed in claim 5, wherein the radio frequency switch control circuit comprises a radio frequency switch controller, a resistor R14, a resistor R1, a capacitor C30 and a capacitor C32, the radio frequency switch controller RF1 terminal is used as a radio frequency switch control circuit receiving signal output terminal, the radio frequency switch controller RF2 terminal is used as a radio frequency switch control circuit transmitting signal receiving terminal, the radio frequency switch controller RFC terminal is connected with a first terminal of a capacitor C32, the second terminal of a capacitor C32 is used as a radio frequency switch control circuit signal external transceiving terminal, the radio frequency switch controller CTRL terminal is connected with a first terminal of a resistor R14, and the second terminal of a resistor R14 is connected with an MCU control circuit switching channel signal terminal or a controller switching channel signal terminal.
9. An intelligent UHF-based information collection method using the intelligent UHF-based information collection system of any one of claims 1 to 8, comprising the steps of:
s1: the server numbers all the wireless concentrators, the wireless collectors and the mobile terminals;
s2; the controller sets a basic time threshold, a floating time threshold and a polling time threshold, wherein the polling time threshold is equal to the sum of the basic time threshold and the floating time threshold, and the floating time threshold is in negative correlation with the power utilization load of the power grid where the wireless concentrator is located;
s3; the time difference of the wireless concentrator polling the same wireless collector is a polling time threshold value, and the controller packs and sends data received by polling in a round to the server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010272239.XA CN111505981B (en) | 2020-04-09 | 2020-04-09 | UHF-based intelligent information acquisition system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010272239.XA CN111505981B (en) | 2020-04-09 | 2020-04-09 | UHF-based intelligent information acquisition system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111505981A CN111505981A (en) | 2020-08-07 |
| CN111505981B true CN111505981B (en) | 2022-04-19 |
Family
ID=71870824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010272239.XA Active CN111505981B (en) | 2020-04-09 | 2020-04-09 | UHF-based intelligent information acquisition system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111505981B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350849B (en) * | 2020-09-15 | 2022-07-29 | 国网浙江省电力有限公司湖州供电公司 | Intelligent setting and updating system for power monitoring data threshold value |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190433A1 (en) * | 2016-05-06 | 2017-11-09 | 廖金能 | Bluetooth data collection system and method for generator set |
| CN107464412A (en) * | 2017-08-09 | 2017-12-12 | 国网浙江省电力公司 | A kind of electric energy meter event information copy reading method |
| CN108600980A (en) * | 2018-04-15 | 2018-09-28 | 赵文兵 | A kind of wheatland monitoring system based on ZigBee and LoRa |
| CN110324420A (en) * | 2019-07-02 | 2019-10-11 | 广东华咨圣泰科技有限公司 | A kind of high efficient data capture transmission control protocol |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100041349A1 (en) * | 1989-08-03 | 2010-02-18 | Broadcom Corporation | Remote radio data communication system with data rate switching |
| CN101894448A (en) * | 2009-05-22 | 2010-11-24 | 上海润金数码科技发展有限公司 | Remote centralized meter-reading system |
| CN102063764B (en) * | 2011-01-25 | 2012-09-26 | 邵泽华 | Intelligent gas meter of Internet of things and control system thereof |
| CN102750815B (en) * | 2012-07-03 | 2014-04-09 | 宁夏隆基宁光仪表有限公司 | Concentrator with environmental monitoring function and control method thereof |
| CN203386238U (en) * | 2013-08-20 | 2014-01-08 | 重庆布鲁杰科技有限公司 | Mobile temperature and humidity on-line monitoring system for cold-chain logistics |
| CN106253943B (en) * | 2016-08-12 | 2018-06-08 | 长江水利委员会长江科学院 | Sensor collector, network system and communication means based on LoRa technologies |
| CN106781391A (en) * | 2016-12-29 | 2017-05-31 | 天津铁研智能技术有限公司 | A kind of remote wireless meter recording and transmission method |
| CN206865608U (en) * | 2017-05-26 | 2018-01-09 | 黄深喜 | The long-distance wireless remote control circuit of the camera lens panorama camera of integral type six |
| CN108429567B (en) * | 2018-03-20 | 2023-07-14 | 国网浙江杭州市富阳区供电有限公司 | Terminal for acquiring carrier gain |
| CN108628211A (en) * | 2018-05-08 | 2018-10-09 | 宁波天德创新智能科技有限公司 | A kind of data concentrator and application method of installation and repairing quality intelligent control platform |
| CN109215322A (en) * | 2018-11-08 | 2019-01-15 | 湖南华烨智能通信技术股份有限公司 | A kind of remote communication module and concentrator |
| CN210109167U (en) * | 2019-06-11 | 2020-02-21 | 国网重庆市电力公司璧山供电分公司 | Electricity consumption information collector and electricity stealing monitoring system |
| CN210007722U (en) * | 2019-07-03 | 2020-01-31 | 皖西学院 | Chemical plant visual safety monitoring system based on Internet of things |
-
2020
- 2020-04-09 CN CN202010272239.XA patent/CN111505981B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190433A1 (en) * | 2016-05-06 | 2017-11-09 | 廖金能 | Bluetooth data collection system and method for generator set |
| CN107464412A (en) * | 2017-08-09 | 2017-12-12 | 国网浙江省电力公司 | A kind of electric energy meter event information copy reading method |
| CN108600980A (en) * | 2018-04-15 | 2018-09-28 | 赵文兵 | A kind of wheatland monitoring system based on ZigBee and LoRa |
| CN110324420A (en) * | 2019-07-02 | 2019-10-11 | 广东华咨圣泰科技有限公司 | A kind of high efficient data capture transmission control protocol |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111505981A (en) | 2020-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201716844U (en) | Remote electric power metering system | |
| CN102117537B (en) | Meter reading gateway, meter reading system and meter reading method | |
| CN107682756B (en) | LoRa-based power distribution terminal communication system | |
| CN206331577U (en) | A kind of super low-power consumption remote measurement water level collection system based on LoRa technologies | |
| CN206019730U (en) | Ambient parameter collection transmitting terminal and environmental parameter acquisition system | |
| CN201535811U (en) | FL system of electric distribution network based on wireless communication | |
| CN201440213U (en) | Wireless remote intelligent monitoring system based on GPRS | |
| CN102879117B (en) | Electric field induction powered disconnector contact temperature online measurement and wireless transmission device | |
| CN204596133U (en) | A kind of gas meter, flow meter meter reading management system based on intelligent terminal | |
| CN111585342B (en) | UHF-based remote electric power information acquisition system and method | |
| CN111505981B (en) | UHF-based intelligent information acquisition system and method | |
| CN201097457Y (en) | Railway signal monitoring network system based on ZigBee | |
| CN212304871U (en) | UHF-based remote electric power information acquisition system | |
| CN207491146U (en) | A kind of distribution terminal communication system | |
| CN102075266B (en) | Nine-channel spatial spectrum estimation super-resolution monitoring direction-finding fixed station system | |
| CN109743718A (en) | Wireless ad hoc network system based on LoRa | |
| CN106990329A (en) | A kind of distribution line dead electricity alarm signal harvester | |
| CN208540180U (en) | A kind of base station LoRaWAN and communication system | |
| CN202488733U (en) | Oil field data transmission system | |
| CN202886508U (en) | Intelligent distribution network failure monitoring terminal | |
| CN201707061U (en) | Short message telemetering multiparameter recorder | |
| CN113691020A (en) | Communication base station direct-current power supply control system based on cellular Internet of things and working method thereof | |
| CN202014376U (en) | Wireless netted network node communication device | |
| CN111650871A (en) | Remote communication monitoring system for operation of distributed ground source heat pump machine room | |
| CN110782644A (en) | Hybrid wireless meter reading and writing system capable of realizing self-networking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |